Back fire through carb
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From: Farmington ,MS
A true backfirwe...not a little sneeze...is usually a major vacuum leak...
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From: Cental, MI
Really bad leak... and/or ignition timed on rear cylinder, or... well.....if it was points I would say Condenser
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From: philadelphia
yeah Im not sure where. I felt pretty confident in getting the intake manifold on properly to the head and carb. But, I will be better able to see when I get it back apart again.
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From: philadelphia
Im not sure if this not relevant to the problem or this is contributing to the problem. But before I left for work this morning I went out and took a quick glance at it. I noticed that what Im guessing is the voes ground wire, a black wire, is frayed and not attached. Would that not being grounded cause this to backfire like it is ?
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From: NC USA
Im not sure if this not relevant to the problem or this is contributing to the problem. But before I left for work this morning I went out and took a quick glance at it. I noticed that what Im guessing is the voes ground wire, a black wire, is frayed and not attached. Would that not being grounded cause this to backfire like it is ?
First, make sure that's not you horn wire laying frayed and un-hooked - it's black too.
Temporarily tie/run a jumper from that black wire to a ground (anywhere) and see what you get. But if runs/starts just sorta ok, go on and investigate the intake fittings etc. You don't want to run one lean from a bad intake leak, especially on break-in. You can overheat a cylinder(s) real quick and waste all the rebuild you just did.
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From: philadelphia
Yes, but probably not to the point it'd blow flame out the carb. But that depends on how much throttle you're giving it and at what rpm when it's backfiring.
First, make sure that's not you horn wire laying frayed and un-hooked - it's black too.
Temporarily tie/run a jumper from that black wire to a ground (anywhere) and see what you get. But if runs/starts just sorta ok, go on and investigate the intake fittings etc. You don't want to run one lean from a bad intake leak, especially on break-in. You can overheat a cylinder(s) real quick and waste all the rebuild you just did.
First, make sure that's not you horn wire laying frayed and un-hooked - it's black too.
Temporarily tie/run a jumper from that black wire to a ground (anywhere) and see what you get. But if runs/starts just sorta ok, go on and investigate the intake fittings etc. You don't want to run one lean from a bad intake leak, especially on break-in. You can overheat a cylinder(s) real quick and waste all the rebuild you just did.